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Method and device for producing coal tar and method and device for producing fuel oil from coal

A coal tar and raw material technology, applied in the field of coal pyrolysis, can solve problems such as complex process flow, poor oil quality, and high energy consumption, and achieve the goals of simplifying the process flow, improving oil quality, reducing energy consumption and production costs Effect

Pending Publication Date: 2022-05-13
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method and device for producing coal tar and a coal-to-fuel oil production method in order to solve the problems of complex process flow, high energy consumption and poor quality of the obtained oil in the existing method for producing coal tar. The method and device, the method is to carry out pyrolysis reaction of raw coal, hydrogen-containing gas and high-temperature furnace ash, and directly send the gaseous pyrolysis oil and gas generated by coal pyrolysis into a fluidized decarbonization unit for catalytic decarbonization reaction, Not only can the technological process be simplified, energy consumption can be significantly reduced; the content of heteroatoms such as heavy components, sulfur, and nitrogen in the final oil can be greatly reduced, and the quality of the oil can be significantly improved

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  • Method and device for producing coal tar and method and device for producing fuel oil from coal
  • Method and device for producing coal tar and method and device for producing fuel oil from coal
  • Method and device for producing coal tar and method and device for producing fuel oil from coal

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Embodiment approach

[0102] According to a preferred embodiment of the present invention, the method for making fuel oil from coal according to the present invention comprises:

[0103] (a) drying the raw coal to obtain dry coal and dust-containing gas, subjecting the dust-containing gas to first gas-solid separation to obtain first solid particles, and then separating the dry coal, the first solid particles and the high-temperature furnace dust, hydrogen-containing gas The gas is contacted to carry out a pyrolysis reaction to obtain pyrolysis oil and gas and pyrolysis solids;

[0104] (b) carrying out the second gas-solid separation with pyrolysis oil and gas to obtain dedusting oil and gas and the second solid particles, then contacting the dedusting oil and gas with the catalyst to carry out catalytic decarburization reaction to obtain coal tar; simultaneously, the above-mentioned pyrolysis solid and the second solid The particles are burned to obtain combustion flue gas, and then the combustio...

Embodiment 1

[0119] using as figure 1 The illustrated process flow for preparing fuel oil includes:

[0120] (a) 100g of the raw coal for the supplementary tower with a particle size of 1 mm in the raw material bin 1 is introduced into the dryer 2, and is dried in contact with the medium and low temperature flue gas introduced into the dryer 2 at the same time to obtain the dry coal of the supplementary tower and the containing The dust gas is introduced into the first cyclone separator 3 for the first gas-solid separation to obtain waste gas and first solid particles. The waste gas is discharged up to the standard after treatment, and the dry coal and The first solid particles are introduced into the pyrolysis reactor 5 through the pressurized buffer bin 4, and contact with the hydrogen-containing gas (the content of hydrogen is 20% by volume) and the high-temperature furnace dust introduced into the pyrolysis reactor 5 at the same time, and the temperature is 550 ℃. The pyrolysis reacti...

Embodiment 2

[0125] using as figure 1 The illustrated process flow for preparing fuel oil includes:

[0126] (a) 100g of the raw coal for the supplementary tower with a particle size of 1 mm in the raw material bin 1 is introduced into the dryer 2, and is dried in contact with the medium and low temperature flue gas introduced into the dryer 2 at the same time to obtain the dry coal of the supplementary tower and the containing The dust gas is introduced into the first cyclone separator 3 for the first gas-solid separation to obtain waste gas and first solid particles. The waste gas is discharged up to the standard after treatment, and the dry coal and The first solid particles are introduced into the pyrolysis reactor 5 through the pressurized buffer bin 4, and contact with the hydrogen-containing gas (the content of hydrogen is 25% by volume) and the high-temperature furnace dust introduced into the pyrolysis reactor 5 at the same time, at a temperature of 600 °C. The pyrolysis reaction...

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Abstract

The invention relates to the technical field of coal pyrolysis, and discloses a method and a device for producing coal tar and a method and a device for producing fuel oil from coal, the method comprises the following steps: (1) drying raw material coal to obtain dried coal, and then contacting the dried coal with high-temperature furnace ash and hydrogen-containing gas for pyrolytic reaction to obtain pyrolytic oil gas; and (2) contacting the pyrolysis oil gas with a catalyst to carry out catalytic decarburization reaction to obtain coal tar. The raw material coal, the hydrogen-containing gas and the high-temperature furnace ash are subjected to the pyrolytic reaction, the gas-state pyrolytic oil gas generated by coal pyrolysis is directly fed into the fluidized decarburization unit to be in contact with the catalyst for the catalytic decarburization reaction, direct coupling of coal pyrolysis and the decarburization reaction is achieved, the technological process can be simplified, and the energy consumption is reduced. The energy consumption and the production cost are obviously reduced; and moreover, the content of heavy components, sulfur, nitrogen and other heteroatoms in the finally obtained oil product can be greatly reduced, and the hydrogen-carbon ratio is high, so that the quality of the oil product is obviously improved.

Description

technical field [0001] The invention relates to the technical field of coal pyrolysis, in particular to a method and device for producing coal tar, and a method and device for producing fuel oil from coal. Background technique [0002] Low-rank coal pyrolysis technology, especially pulverized coal pyrolysis is a major problem in low-rank coal pyrolysis, but the pulverized coal encountered in coal mining, especially in the process of coal crushing or pyrolysis, is A practical problem faced by low-rank coal pyrolysis is also a trend in the development of low-rank coal pyrolysis. After years of research and development of low-rank pulverized coal pyrolysis, some technologies have also undergone pilot or industrial tests, but they are generally faced with key technical bottlenecks such as poor tar quality, high dust content in the pyrolysis process, and difficult separation of oil and dust in the later stage. . [0003] CN101538482A discloses a method for deep processing of me...

Claims

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Application Information

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IPC IPC(8): C10B53/04C10K1/00C10K1/02C10G7/00
CPCC10B53/04C10K1/002C10K1/02C10K1/026C10G7/00
Inventor 高浩华杜万斗
Owner CHNA ENERGY INVESTMENT CORP LTD
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